OĞUZ, D. (2004) “Accuracy of endoscopic ultrasonography in upper gastrointestinal submucosal lesions”, Turkish Journal of Gastroenterology, 15(2), pp. 82–85. Available at: https://www.turkjgastroenterol.org/index.php/tjg/article/view/1353 (Accessed: 1 January 2026).